Answer:
36
Step-by-step explanation:
We need to find the LCM of both numbers. That is the least common multiple.
The prime factorization of [tex]9[/tex] is: [tex]3 * 3[/tex]. For [tex]12[/tex] it is [tex]2 * 2 * 3[/tex].
So we multiply: [tex]2 * 2 * 3 * 3 = 36[/tex]